Power transmission



Dec. 20, 1938. l. R. DAVIS 2,140,790 POWER TRANSMISSION Filed June 26, 195'?v llllll/ 11 w ff lmf......,

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UNITED STATES PATENT OFFiCE 2,140,790 POWER TRANSMISSIGN 1ra R.. Davis, Buffalo, N. Y. Application June 26,*1937, Serial No. 150,553 4 QIaims. (Cl. 'i4-300) This invention relates to certain new and useof the same size as the companion gear I2 with ful improvements in power transmission mechathe axis thereof disposed diametrically opposite nism. that o-f such companion gear.

It has for one of its objects to provide a power Rising from the power take-off member I5 sub- 5 transmission which is so designed and construotstantially centrally thereof, is a bracket ZI in the ed as to develop maximum power or driving force upper end of which is journaled a driving shaft at a minimum expense and with a minimum of 22 which is connected with an electric motor or effort. other power source and which is axially in line Another object of the invention is to provide with the axis of rotation of the output member I5. lo an apparatus of this character which is simple, Mounted on this shaft is. a bevel gear 23 meshl0 compact and inexpensive in construction, which ing with a companion bevel gear 24 which is is positive and efficient in operatic-n, and which connected by a flexible in-p-ut or power-transhas a wide application of use in the mechanical mitting arm 25 with the shaft I3 of the driven field. gear I2. This power-transmitting arm, as l5 Other features of the invention reside in the clearly shown in Figure 1, may be in the form l5 construction and arrangement of parts hereinof a shaft connected by universal joints 26 with after described and particularly pointed out in the companion ends o-f the shaft I3 and the shaft the appended claims. of the bevel gear 24, respectively, whereby motion In the accompanying drawingzis transmitted from the driving shaft 22 to the Figure 1 is a sectional elevation of the power gear I2 through the medium of the bevel gears 20 transmission embodying my invention. Figure 2 23, 24 and the in-put arm 25, the latter being is a fragmentary top plan view thereof. Figure 3 preferably disposed at an angle of approximately is a sectional elevation of a modified form of the 45 to the vertical. invention. Figure 4 is a fragmentary top plan When motion is transmitted from the shaft 22 view of such modification. to the driving gear I2 in the manner just de- 25 Similar characters of reference indicate cor scribed, the latter as well as its companion gear responding parts throughout the several views. I9 is revolved about the fixed gear II, thereby Referring to the embodiment of the invention transmitting motion to the take-off or out-put illustrated in Figures 1 and 2, the numeral I0 inmembers I5 and I8, respectively, and effectually 30 dicates the base member or body upon which the creating an increase in the driving force delivered 30 working parts of my power transmission ,are supby said members I5 .and I8. ported or mounted and which may be of any ap- In the modified form of my invention depicted propriate construction, to suit the installation in Figures 3 and 4, I have shown a chain drive desired. Rising IOm this baise member end X- between the power-transmitting or i -put arm 25 edlir Secured thereto, O'r O-rmed integrally thereand the driven gear of the transmission. In 35 with, is a stationary, substantially centrally-disthis case, the power output or take-off member DOSed teethed Wheel Or gear ll- MeShHg with is in the form of a comparatively large gear 21 this gear to revolve about it and about its own and meshing with the central or fixed gear 28 is axis is a driven gear I2 preferably of the same the driven gear 29 whose shaft 30 is journaled in diameter as the gear II and fixed to the lower Said take-orf member 21 and w which is fixed a, 40 end of a driven shaft I3 journaled in bearings I4 sprocket gear 3|. The latter is connected by a of a revolving power Olli/Put 0r take Off member chain 32 with a sprocket gear 33 fixed to a shaft I5 Which may be 111 the form 0f e pulley, 24S 34 journaled in the power take-olf member and shown, and which carries a depending Shaft I6 connected by the flexible in-put arm 25 4with the disposed axially thereof and journaled in a beardriving shaft 22 in the same manner as the rst- 45 ing l1 formed '1n the base member ID and coincidescribed construction. This arrangement likedent with the axis of the gear ll- At its lOWer wise is very efficient in operation and creates a end, this shaft I6 may be provided with a second maximum driving force to the out-put member output or take-off member which may be in the with a minimum expenditure of power. In this form of a gear I3. For the purpose 0f properly adaptation of my mechanism, it can be eiectualiy 50 balancing the power take-off member I5 as it is used for driving vehicles and other transportation revolved about the fixed gear II, it is preferably mediums. provided with a second driven gear I9 which is I claim as my invention: fixed on a Shaft 20 jeurrleled in Seid member l5 l. A power transmission mechanism, comprisand meshing With the geel' ll, Seid geef l9 being ing a support, a gear fixed thereto, a revolving 55 power output member mounted on said support axially of said gear and having a driven gear journaled thereon at one side of its axis of revolution and meshing with said fixed gear, a bearing bracket disposed centrally of and extending from one side of said output member, a driving shaft journaled in said bracket .and having its axis of revolution in axial alinement with that of the output member, and an angularly disposed shaft operatively connected at its ends by uni- Versal joints to said driving shaft and said driven gear.

2. A power transmission mechanism, comprising a support, a revolving output member journaled on said support and having a bearing bracket thereon, a drive means including a shaft journaled in said bracket, and means for transmitting motion from said drive means to said output member consisting of a fixed gear secured to said support axially of the output member, a rotatable gear journaled on said output member at one side of its axis and meshing with said xed gear, and a power-transmitting connection between said drive means shaft and said rotatable gear.

3. A power. transmission mechanism, comprising a support, a revolving output member journaled on said support and having a bearing bracket thereon, a drive means including a shaft journaled in said bracket, and means for transmitsaid drive means shaft and one of said rotatable gears.

4. A power transmission mechanism, comprising a support, a revolving output member joursaid output member consisting of a xed gear secured to said support axially of the output member, a rotatable gear journaled on said output member at one side of its axis and meshing with said xed gear, a pair of chain-connected sprockets mounted on said output member, one of the sprockets being coaxial with the rotatable gear to revolve therewith, and a power-transmitting connection between said drive means and the other of said sprockets.

IRA R. DAVIS. 

